"According to law enforcement reporting, some individuals and criminal groups divert CPDs [controlled prescription drugs] through doctor-shopping and use insurance fraud to fund their schemes. In fact, Aetna, Inc. reports that nearly half of its 1,065 member fraud cases in 2006 (the latest year for which data are available) involved prescription benefits, and most were related to doctor-shopping, according to the Coalition Against Insurance Fraud (CAIF). CAIF further reports that diversion of CPDs collectively costs insurance companies up to $72.5 billion annually, nearly two-thirds of which is paid by public insurers. Individual insurance plans lose an estimated $9 million to $850 million annually, depending on each plan’s size; much of that cost is passed on to consumers through higher annual premiums."

Source

National Drug Intelligence Center, Drug Enforcement Administration, "National Prescription Drug Threat Assessment," (Washington DC, April 2009), p. 20.